websocket 三 hub 去重：抽 runWritePump 共享写泵 + 合并 agent 广播函数为 broadcastAgent

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internal/apps/openflare/websocket/write_pump.go

@@ -0,0 +1,47 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package websocket
+
+import (
+	"log/slog"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+// runWritePump drains send onto conn until done is closed, emitting
+// JSON pings at wsPingInterval. Shared by agent/relay/flared clients;
+// closeFn must be idempotent.
+func runWritePump(
+	nodeID string,
+	conn *websocket.Conn,
+	done <-chan struct{},
+	send chan Message,
+	closeFn func(),
+	logLabel string,
+) {
+	ticker := time.NewTicker(wsPingInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-done:
+			return
+		case message := <-send:
+			_ = conn.SetWriteDeadline(time.Now().Add(wsWriteDeadline))
+			if err := conn.WriteJSON(message); err != nil {
+				slog.Debug(logLabel+" write failed", "node_id", nodeID, "error", err)
+				closeFn()
+				return
+			}
+		case <-ticker.C:
+			select {
+			case <-done:
+				return
+			case send <- Message{Type: messageTypePing}:
+			default:
+			}
+		}
+	}
+}